64 52 523 Removing and installing/replacing A/C system compressor (vehicles with N63 engine)

WARNING: This page does not describe the selected car, but rather 31 other vehicles, including the 2015 BMW Alpina B7L, 2015 BMW Alpina B7, 2015 BMW 750i, 2015 BMW 750Li, and 2015 BMW 740i. However, it is still accessible from the selected car via links, so may be relevant.

WARNING: Danger of injury!

Refrigerant circuit is under high pressure!

Avoid contact with refrigerant and refrigerant fluid.

Read and comply with SAFETY INFORMATION .

IMPORTANT: Risk of damage!

Restart engine only when air conditioning system has been correctly filled.

Read and comply with NOTES on compressor replacement.

Follow notes for OPENING AND REPLACING PARTS IN REFRIGERANT CIRCUIT .

If air conditioning system is opened for more than 24 hours:

Replace DESICCANT INSERT for air conditioning system.

Necessary preliminary work:

Drain off AIR CONDITIONING SYSTEM
Remove air conditioning COMPRESSOR DRIVE BELT
Remove FRONT RIGHT WHEEL ARCH COVER
Remove STEERING ASSEMBLY COVER

Unfasten screws (2).

Tightening torque 64 53 3AZ.

Remove lines (3) from capacitor (1).

Fig 1: Identifying Capacitor, Lines And Screws

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Cover cooling fins with aluminium sheet (2) or similar material.

NOTE: This prevents the cooling fins from being damaged when the compressor is removed later.

ARS expandable hose (1) is only tied up in the case of the equipment specification with Dynamic Drive.

Fig 2: Identifying ARS Expandable Hose

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Release screws (1).

Remove both retaining brackets of anti-roll bar (2).

Carefully lower anti-roll bar.

Tightening torque 31 35 1AZ .

Fig 3: Identifying Anti-Roll Bar And Screws

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Release screws (1).

Tightening torque 64 52 3AZ .

Fig 4: Identifying Compressor Screws

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IMPORTANT: Seal openings or lines on compressor with special tool 32 1 270 to prevent escape of media and dirt contamination.

NOTE: Secure compressor (5) against falling.

Release screw (1).

Tightening torque 64 52 3AZ .

Disconnect plug connection (2).

Lower compressor (5).

Release screws (3) and (4) and remove refrigerant lines.

Tightening torque 64 52 1AZ .

Fig 5: Identifying Refrigerant Lines, Compressor And Screws

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Installation note:

Replace sealing rings.

Use special tool 00 9 030 to mount sealing rings without damaging them.

Have another person pull the radiator forward.

Carefully feed out compressor upwards.

Replacement:

Adjust the amount of REFRIGERANT OIL in the new compressor

IMPORTANT:

Risk of compressor damage!

Risk of customer complaints due to reduced cooling power of the Air conditioning!

Before the installation of the new compressor, it is absolutely necessary to adjust the amount of refrigerant oil in the new compressor!

Compliance with SAFETY INFORMATION is mandatory!

After installation:

EVACUATE AND FILL air conditioning system